Commit graph

47 commits

Author SHA1 Message Date
Gwenole Beauchesne
15519ebe3d legal: add per-file authorship information.
Credit original authors on a per-file basis as we cannot expect people
to know all country-specific rules, or bother browsing through the git
history.
2013-11-22 06:39:15 +01:00
Gwenole Beauchesne
f52dfe5797 jpeg: rework and optimize parser.
Split the input buffer data into decoder units that represent a JPEG
segment. Handle scan decoder unit specifically so that it can include
both the scan header (SOS) but also any other ECS or RSTi segment.

That way, we parse the input buffer stream only once at the gst-vaapi
level instead of (i) in gst_vaapi_decoder_jpeg_parse() to split the
stream into frames SOI .. EOI and (ii) in decode_buffer() to further
determine segment boundaries and decode them.

In practice, this is a +15 to +25% performance improvement.
2013-09-20 18:32:12 +02:00
Gwenole Beauchesne
3cc7b26961 libs: use GstVaapiMiniObject for video decoders.
Port GstVaapiDecoder and GstVaapiDecoder{MPEG2,MPEG4,JPEG,H264,VC1} to
GstVaapiMiniObject. Add gst_vaapi_decoder_set_codec_state_changed_func()
helper function to let the user add a callback to a function triggered
whenever the codec state (e.g. caps) changes.
2013-05-07 17:51:27 +02:00
Gwenole Beauchesne
c43a2d497a decoder: add gst_vaapi_decoder_get_frame_with_timeout().
Add gst_vaapi_decoder_get_frame_with_timeout() helper function that will
wait for a frame to be decoded, until the specified timeout in microseconds,
prior to returning to the caller.

This is a fix to performance regression from 851cc0, whereby the vaapidecode
loop executed on the srcpad task was called to often, thus starving all CPU
resources.
2013-04-25 14:18:00 +02:00
Gwenole Beauchesne
a24e216466 decoder: rename GstVaapiDecoderFrame to GstVaapiParserFrame.
Rename GstVaapiDecoderFrame to GstVaapiParserFrame because this data
structure was only useful to parsing and a proper GstvaapiDecoderFrame
instance will be created instead.
2013-04-16 19:11:02 +02:00
Gwenole Beauchesne
4009430bec decoder: sanitize codec-data decoding.
Add a new GstVaapiDecoder::decode_codec_data() hook to actually decode
codec-data in the decoder sub-class. Provide a common shared helper
function to do the actual work and delegating further to the sub-class.
2013-03-21 14:38:06 +01:00
Gwenole Beauchesne
2305b0db46 decoder: allow frames to be dropped.
If the decoder was not able to decode a frame because insufficient
information was available, e.g. missing sequence or picture header,
then allow the frame to be gracefully dropped without generating
any error.

It is also possible that a frame is not meant to be displayed but
only used as a reference, so dropping that frame is also a valid
operation since GstVideoDecoder base class has extra references to
that GstVideoCodecFrame that needs to be released.
2013-01-30 16:38:48 +01:00
Gwenole Beauchesne
0c99f351fc legal: fix year for some copyright notices (2013). 2013-01-29 14:37:02 +01:00
Gwenole Beauchesne
e4e3a58bc0 decoder: fix check for end-of-stream in raw API mode.
Make sure to immediately return GST_VAAPI_DECODER_STATUS_END_OF_STREAM
if the end-of-stream was already reached at the previous iteration.
2013-01-17 18:39:22 +01:00
Gwenole Beauchesne
4fd99cc989 decoder: use an array of units instead of a single-linked list.
Use a GArray to hold decoder units in a frame, instead of a single-linked
list. This makes 'append' calls faster, but not that much. At least, this
makes things clearer.
2013-01-07 14:10:13 +01:00
Gwenole Beauchesne
8c2d9bcd24 decoder: maintain decoded frames as GstVideoCodecFrame objects.
Maintain decoded surfaces as GstVideoCodecFrame objects instead of
GstVaapiSurfaceProxy objects. The latter will tend to be reduced to
the strict minimum: a context and a surface.
2012-12-18 15:31:52 +01:00
Sreerenj Balachandran
e7e5c74a6e decoder: use GstVideoCodecState.
Use standard GstVideoCodecState throughout GstVaapiDecoder and expose
it with a new gst_vaapi_decoder_get_codec_state() function. This makes
it possible to drop picture size (width, height) information, framerate
(fps_n, fps_d) information, pixel aspect ratio (par_n, par_d) information,
and interlace mode (is_interlaced field).

This is a new API with backwards compatibility maintained. In particular,
gst_vaapi_decoder_get_caps() is still available.

Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
2012-12-18 15:31:51 +01:00
Gwenole Beauchesne
66cc8754fc decoder: add new GstVaapiDecoder API.
Split decoding process into two steps: (i) parse incoming bitstreams
into simple decoder-units until the frame or field is complete; and
(ii) decode the whole frame or field at once.

This is an ABI change.
2012-12-18 15:31:51 +01:00
Gwenole Beauchesne
d7fccc351a decoder: drop unused functions. 2012-10-09 14:40:00 +02:00
Gwenole Beauchesne
a10b3d3032 decoder: cope with new GstVaapiContextInfo based API.
Update decoders to report the maximum number of reference frames to use.
2012-09-10 18:27:40 +02:00
Gwenole Beauchesne
d8b0c8ec38 Use standard G_GNUC_INTERNAL keyword instead of attribute_hidden. 2012-07-19 18:01:12 +02:00
Holger Kaelberer
82f11ffb30 decoder: maintain caps for interlaced streams.
Extend GstVaapiDecoder base object to maintain caps with "interlaced"
property.

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
2012-03-19 18:43:06 +01:00
Gwenole Beauchesne
d75d70d395 mpeg2: fix crash when there is no free surface to decode into. 2012-02-06 15:54:42 +01:00
Gwenole Beauchesne
7b19745141 decoder: simplify output of decoded frames.
Drop obsolete gst_vaapi_decoder_push_surface() that was no longer used.
Change gst_vaapi_decoder_push_surface_proxy() semantics to assume PTS
is already set correctly and reference count increased, if necessary.
2012-01-27 13:28:12 +01:00
Gwenole Beauchesne
e5d12e8853 decoder: rework the internal VA objects API.
The new API simplifies a lot reference counting and makes it more
flexible for future additions/changes. The GstVaapiCodecInfo is
also gone. Rather, new helper macros are provided to allocate
picture, slice and quantization matrix parameter buffers.
2012-01-27 13:28:11 +01:00
Gwenole Beauchesne
dbba1f6107 decoder: allow slices to be attached to pictures later. 2012-01-24 10:21:45 +01:00
Gwenole Beauchesne
74d3680381 decoder: add ref_count to GstVaapiPicture. 2012-01-24 10:15:52 +01:00
Gwenole Beauchesne
92f11799d1 legal: fix year for some copyright notices. 2012-01-16 11:40:51 +01:00
Gwenole Beauchesne
1594d99d55 legal: add Intel copyright on modified files. 2012-01-16 11:40:51 +01:00
Gwenole Beauchesne
14cc1cf061 legal: fix copyright notices to include "Copyright" term. 2012-01-16 11:40:51 +01:00
Gwenole Beauchesne
5aea02a66f vc1: fix bitplanes decoding. 2012-01-16 11:40:51 +01:00
Gwenole Beauchesne
3360f7f3e3 Add VA decoder helpers. 2012-01-16 11:40:50 +01:00
Gwenole Beauchesne
3e1d235c1a decoder: fix possible leak of VA surfaces.
Under some circumstances, we could have leaked a surface, thus not
releasing it to the pool of available surfaces in the VA context.
The strategy is now to use a proxy earlier and automatically ref/unref
whenever necessary. In particular, during the lifetime needed for FFmpeg.
2012-01-05 17:35:43 +01:00
Gwenole Beauchesne
e3c6a78da6 decoder: drop unused headers. 2011-12-08 15:16:14 +01:00
Gwenole Beauchesne
1701ce3107 Update copyright notice. 2011-06-14 13:54:07 +02:00
gb
86d0b2ade9 Regularly update and expose decoder caps. 2010-09-20 12:55:46 +02:00
gb
a777a98f2f Add mechanism to reinsert buffer leftovers into the queue. 2010-09-20 12:55:46 +02:00
gb
edae9f068c Extract framerate information from caps. 2010-09-20 12:55:44 +02:00
gb
2d5434cb0b Move caps initialization to parent class. 2010-09-20 12:55:43 +02:00
gb
4285c2cc02 Use size information from the demuxer, whenever available. i.e. fix WMV3 decoding. 2010-09-20 12:55:43 +02:00
gb
477e3b8530 Add gst_vaapi_decoder_ffmpeg_new_from_caps() helper. 2010-09-20 12:55:42 +02:00
gb
021d2ab947 Drop obsolete (and wrong) code. 2010-09-20 12:55:42 +02:00
gb
ecff33db03 Try to fix timestamps (step 1). Looks OK on H55. 2010-09-20 12:55:42 +02:00
gb
4754317e70 Relicense gst-libs/ code to LGPL v2.1+. 2010-09-20 12:55:42 +02:00
gb
a4d201aaf9 Drop excessive threading that over-complicates synchronisation.
MPEG-2 & H.264 videos now play but there are other problems (timestamps).
2010-09-20 12:55:42 +02:00
gb
2356ceb0d9 Use a GstTask with start/stop semantics for the decoder thread. 2010-09-20 12:55:41 +02:00
gb
bda32435c2 Try to set correct timestamps to the decoded surface proxy. 2010-09-20 12:55:41 +02:00
gb
89c094d659 Add "codec-data" property for additional codec data.
e.g. VC-1 sequence headers for elementary streams.
2010-09-20 12:55:32 +02:00
gb
664542fe2e Cosmetics (weird indentation). 2010-09-20 12:55:32 +02:00
gb
cc28cdbd60 - Add PTS and framerate information.
- Simplify parsing with an AVCodeParserContext.
2010-09-20 12:55:32 +02:00
gb
d7e4bca05b Handle user end-of-streams. Add gst_vaapi_decoder_{start,stop}() helpers. 2010-09-20 12:55:32 +02:00
gb
a203d19a35 Add initial (multithreaded) decoder based on FFmpeg.
There are tons of bugs left:
- Decoder API not nice enough with error conditions
- FFmpeg parser is sometimes broken
- Packets queue can be lost
2010-04-23 16:05:58 +00:00